All platforms: Fedora's released a bootable beta of their upcoming 12th release, "Constantine," that speeds up system updates, makes Bluetooth an on-demand service, and optimizes CPU and graphics performance on netbooks, among other improvements.

Fedora always offers a wide variety of downloads for each release, even betas, but if you're looking for a simple live test of the new system, we'd recommend grabbing the Fedora Live USB Creator and downloading a Live CD ISO file to drop into it.

There's far too much in the beta announcement to try and list here—and even more in the project wiki. Give Fedora 12 beta a try, and if you're a fan, tell us what sets Red Hat's consumer OS apart from the competition in the comments.